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baherus [9]
2 years ago
8

PLEASE HELP WILL MARK BRAINLIEST 45 POINTS

Mathematics
2 answers:
andre [41]2 years ago
7 0

Answer:

I got 58.5

I multiplied 3x9 to get 27

then 3x6 to get 18

then 3x9/2 to get 13.5 and added them all together.

Aleonysh [2.5K]2 years ago
6 0
Area of bottom triangle = 27/2= 13.5
Area of bottom rectangle = 9x3=27
Area of upper rectangle = 6x3=18

Hope I helped!
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Which number is a rational, an integer, and a real number? A. 0 B. there is no such thing C. -4/7 D. pi4
pashok25 [27]

Answer:

A. 0

Step-by-step explanation:

A. 0   <em> rational, integer, real </em>

B. there is no such thing <em>   false; yes there is</em>

C. -4/7    <em>rational, real, not integer</em>

D. pi4     <em>real, not integer, not rational</em>

Answer: A. 0

5 0
2 years ago
1. find the exact value of cos2θ if sin 2θ=3/4 and θ is between 0° and 90°
musickatia [10]

Answer:

<u>Identities used:</u>

  • sin²θ + cos²θ = 1
  • cos2θ = cos²θ - sin²θ

#1

  • sin2θ = 3/4, and θ in the first quadrant
  • cos²2θ = 1 - sin²2θ
  • cos2θ = √(1 - sin²2θ) = √(1 - 9/16) = √(7/16) = √7 / 4

#2

  • sinθ(cos²θ - cos2θ) =
  • sinθ(cos²θ - (cos²θ - sin²θ) =
  • sinθ(sin²θ) =
  • sin³θ

5 0
2 years ago
A bag contains yellow marbles and blue marbles, 23 in total. The number of yellow marbles is 7 less than 2 times the number of b
steposvetlana [31]

Answer:

b=10, a=13

Step-by-step explanation:

let s number of yellow = a

number of blue = b

we have

a+b =23

2b - a = 7

->a+b +2b -a = 23+7

-> 3b = 30

->b = 10

->a = 13

3 0
2 years ago
Determine whether f(x)= 2x + 4 and g(x)= x - 4 are inverses of each
LekaFEV [45]

Answer:

No, they are not inverses

Step-by-step explanation:

f(g(x)) --> 2x-4

g(f(x)) --> 2x

6 0
3 years ago
Idk if someone wants to help to solve this but- it’s worth a try I think it’s 15 points or so and I’ll mark brainliest to first
Anastaziya [24]

Answer:

Part 3: 9 Dogs

Step-by-step explanation:

It says that the ratio they want you to put it in is dogs/students, so dogs are x, and students are y, so if there are 4 students for every dog, 36 students would require 9 dogs

And if the roles were switched it would be students x, dogs y, and there would be 9 students for 36 dogs :D

3 0
2 years ago
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